Check for picker-sticks.



A, E. RHOADES.

HEGK FOR IGKER STGKS.

APP-

LICATION FILED NCIV'` 23. 1910.

Paented Ma1228, 1911.

.In- U Ujnite States .granted September 5, 1899 to-.Draper and l UNTTEDsTATns -PATltnsiT ,oninon.

ALONZO n. nHoADns, or n oPnnALE, MASSACHUSETTS, Assistme To nRArER CoM--PANY, 0F HOPEDAILE, MASSACHUSETTS, A coRPonATIoN or MAINE.

To all echo/m vi'tmay concern:

Beit known that I, ALONZOl E.

RHoAons,

citizen of the United States, and'resident the following description, inconnection with the-aeompanying drawing', is n sl'ecifioatioii, likeoharooters, on the drawing repref VSenting like arts. L

Patent No. 682,553

Northrop tlch'eel't for loorn piekensticls is shown, in which the cheekis made as en.

endless or c :losed loop of flexible material and of'e length lessthanthe stroke of the picker-stickwhich swings Within the loop,

ineens 'being provided to hold one side` of A.the loop andrelease theother side on one strokeofthe stick, and von the other stroke thepreviously held side othe loop 1s re leased and its other side held. YThis-causes un intermittent longit-'udii-nil or creeping movement of thestrup, und at the seine time o grafdunllyincreasing retftrding actionisexerted. upon the free side of the loop by u spr1ng-controlled andeecentrlc'detent, the

force of the blo-W of the pickerlstiek'being taken up part-ly by theunelaniping notion on the'one side of the loop and by the grad'- -imll*Y increasinv draw on the. other side to n b 7 grit nelly check andfinally stop the nievementof the picker-stiel; at each end of its.

` stroke. The constantly :md rapidly recurring changes in tl-ie'tens'ionof vthe detent controlling sprlngs tends to vund ue Weunnnd its object'the .production of L1- pichenstiok chocho-if tfhlesolosedandinterinittlngly creepingl* t pesuehasisdiselosed in snidxpattli the-.spilirgs Wholl y -eliini listed.

` lf- See onion 4the linefZ-, looking down.; Fig.' 3 is .evertiealsectienxl detail 'teiten on the line 3T3, Fig, to show" moreelearl dsorne of the vfeatureejo'f oo n- Specification of LettersPie-tent.l

against the lower cnld -of'thef'busliing t reSfQ'ffmyL'vOnf1* ed in; thesub-joined edout'in al. Flg.- .la

`and the loopesui'iportand'freference toA Fig, .2 it will seen'fthe two.spindlesi are oppositely-in ned. lljynthe GHECK Fon' Hexen-smoke.

one ot the stands which isi-mounted onthe luy, the sectional portion'illustrating the Patented MttlnS, 1911.

spp ntiop fue@ November 23, 1ero. serial No. 593,805.

manner in which the deten-t member is mounted on the stend.-

The lay A, slmttlebox B thereon,thc

'the parts carried thereby are' reversely posi'- tioned when 'saidstands are in place.

Slotted ears l und 2 extend outwardly from the stand in n plane 'at nnangle ,to the hori-l zent-al as shown, the stand being extendedldownward: below the ear -l to forn1.; an`up `right and rigid .guide-stop'3 having :1 beveled outer face ll. Just beneath said ear the guidelstophas 'fi lug or projection thereon, for n' purpose to `be deserihed.` i'Alf adjustable deflect-,or and loop-'support 6 having :1n out-turned-foot 7 is provided' with un outwardly extended head S- shaped to tit inagroove t), Fig. El, in the bottom of the slotted ear oi thestztnd, andheld In udsupport being-made 'transversely convex, as '1s ver-ycleairlyshown in Fig. 2.

A headed spindle l2 dependsfroni the.

slotted-enr .l and is thren-ded to receive n 'brcnlegg-niid i'uy presentinvention has for.

nut 13, und nponthc spindle-is nulunted a bushing 14 having enannulurhend v15y which,

justedfposition on said enr by n bolt l() and when thenutl und-u washerZitiere-set up i' bontan vincl-ined` 'tixisr vizi:

, 4. Upon the bushingis lol-isely in( "tnt:- 'ed the-'elongnledhubel'qof, littrans convex 'detent member- 18,: Gonnie Ahespindle 12,--, v'

v'which latter is-pare-llel to. the 'guideestop 3, 'I 'I eter G., lend'by arrangement shown the weight of the detent member 18 at the front ofthe lay always tends to swing it toward the outer end of the lay, whilethe tendency of the detent .member at the back of the loom is to swingaway from the adjacent end of thelay, but in each case the tendency isto cause the convex face of the detcnt member to more lclosely approachthe beveled face a of the opposed guide stop This genera-l arrangementof the parts 1s shown very clearly in Fig. 2, the opposed faces of adetent member and the adjacent' guide-stop normally member 18; the strapalways creeping in the' same direction, indicated by arrow 100, Fig. 2.

When the picker-stick strikes the lefthand end of the loop E, Fig. 2,the pull of strap along the front side f-will act, with the .force ofgravity, upon the front detent 18I and the latterwill tend to cramp orbind the strap between itself and the adjacent guide-stop 3., while thepull along the oppo site side b of said strap. tends to rock the backdetent member away from the adjacent guide-stop, against the action ofgra-w ity, releasing the strap at that side so 'that it can move orcreep to the left, Fig. 2, as picker-stickcompletes. its outward.

the

stroke.

On the inwardstroke of the picker-stick the operation is just reversed,for then the side Y) of the'loop strap will be bound and held whilethefront side f will be released and will creep toward the right, thepull.. of thestrap away from the thickest' edge of a guide-stop 3 alwaysacting uponjthe corredetent mem the same manner the thinnin of a strapby sponding detent member 18 to release its. 4gripup'on the strap, aswill bemanifcst.

The disposition of the weight of each detent member is such that theforce of grav- -ity thereon always tends to move such member intoenagement lwiththe strap if the ger is free to move, and w en the pull ofthe strap is inthe same direction the binding ori cramping action uponthe `strap is effected. Straps of different thicknesses are providedfor'by adjusting the 'fulcrum spindles 12 in or out on the ears 1, andin Wear. can be compensated or. Thus the picker-stick is checked 'at theend of each stroke, and the intermittent creeping ofthe strap iseffected to present new portions vthereof to take up the impact of thepickersticl, and without the employment of springs to control the normalpositioning of the detent members.A The farther out t-he loopssupports 6are set the greater will be the deflection of the strap and thechecking' friction thereupon by said supports will be increased, as willbe apparent, and by slight adjustment of the spindles 12 the cramping ordetaining action of the detent members canbe regulated or adjusted withgreat exactness, s o that a light o r a4 heavy checking will result, asdesired. Each loop-support 6 is located adjacent the releasing side ofone of the dete'nt members and its opposed guidestop.

The operative or binding movement of the detent member islimited byengagement of thelug 5 on the guide-stop 3 with a corresponding lug 9.0on the dctent member .18, see Fig. 3, so that said member cannot byaccident be swung beyond its operative position, releasing movement ofthe detent` member being limited by engagement of the lat ter with thedownturncdtip 21. of the toe 7.

The detents 18 and their adjacent guidestops 3 operate alternately uponopposite sides of the check-strap loop E, to hold one side and releasethe otherside, of the loop when the picker-stick moves in one direction,and vice versa on the reverse movement of the picker-stick, as in theJatent re fel-red to, but herein the beveled aces 4.- of the guide-stopsenable me to form the convex acting f aces of the detents 18concentric'with the spindles 12, which is an easier construction toIna-kc than the cam-faced detents shown inthe patent previouslymentionefh The. overhanging ears 1 and 2 of each stand D prevents anyimproper lifting tendency of the check-strap, and the feet 7 provide asuitable and relatively wide support for the lower edge of said strap.Having fully described my invention, what 1I claim as new and desire t'osecure by Letters Patent is:

1. In a. loom', a picker-stick, anendless check-strap therefor, devicesto frictionally grasp alternately opposite sides of the strapf A loop,one of said devices holding the loop.. from longitudinal movementwhenthe other device releases itto permit such movement,

and vice versa, and anadjustable loopsl port and deflector adjacent eachof stud e- 'vice`s, adjustment of such support varying4 the path Aof they.strap-loop Vas it approaches s the adjacent engaging device.

y2. In a loom,"a picker-stick, an endless check-strap therefor, devicesto frictionally rasp alternately opposite sides' of the strap- ..1

oop, one of sind devices-holdingthe loop from'longitudinal movement whenthe otherv device releases it to permit such movement,

and vice versa, a depending looplsupportstrap rests, and means tonmintain said supill port adj usted toward or away from the path of thepicker-stick, to thereby decrease or increase the bend in the side ofthe checkstrap :1s it approaches the adjacent engaging device.

3. In :l loom, a picliestick, e continuous and flexible creepingcheck-Strap therefor and' within which it oecillates, devices tofrictionally engage alternately opposite sides of the strap-loop, eachdevice com`- prising a bevel-faced guide-stop and an op posed detentmeniber having a convex face, mounted to swing toward and from 4the'guide-stop, longitudinal pull on either end of the loop causing one ofthe detent mem- .bers to swing toward the opposed guidestop, to bind thestrep-loop against the beveled fece of the stop while the other `1nemberswings away from its guide-step,

releasing the loop, and 'oppositely inclined fulcro upon which saiddetent members swing, said filiere being so inclined that' each det-entmember is normally moved by gravity toward .operative posltlen.

all. In e loom, a picker-stick, e continu-f ons and llexible'ereepingcheelrfstiap there for vand Within 1yvhiehit oscilletes, devices tofrietionally engage alternately opposite sides of. the strap-loop, eachdevice eomprising :i ixed guide-stop and a gravitycontrolled, i pivoteddetent 'member movable ton-crd and fromthe adjacent guidefstop,longitudinal pull on either end of the strep!- loop causing one detentmemberK to bind the loop while the other cle-tent ,member 'is movedagainst the action of gravity to release the loop, and means to vary thedistence between the 'opposed faces of a detcnt member and guide-stop,to provide for straps of different thicknesses and to corn pensate lorwear, v 'In e leoni, e. inciter-stick, a cont-inn one :mdV flexible'creeping cheek-strap therefor and within which it oscillates, devices to'frictionally eng-age zlternately opposite sides oi' the strzipdoop,each 'device compiising a fixed gnide-stop and a cooperatingpivotnlly--monnted detent member to receive the straps between the-1n,said stop having; o, beveled .fece and the detent member hav-` ing anopposed convex face, und an inclined fulcruni-npon which the detentmember is mounted, col'nbined with a loop-support adjustably mountednein the releasing side of each 'engagingdevice, to verticallysustaintlie check-strap and also to deflect the seine inoreorllessadjacent to the point et which it isi-'bound intermittingly bytheengaging device. l

l. In a' loom, a picker-stick, an endless, flexible eliwlr--straptherefor and Within whieli'it oseillates, supports to enffage the lower'edge of and sustain vertically the- 'seld strap, and bniding devicesactmg inalternation upon 'oppos1te sides of the strapn loop to hold oneside and release the other, and vice verse, each of said devicescornprising a depending and lixed guide-stop against' the outer faceofwhich the strap travels, a detent member having a convex face toengage and at times press the strap against 1the gnidestop, aninclinedlulcrnm spindle upon which the detent member is mounted toswing,- the action4 of gravity moving said membei' toward binding position, and stops to limit swinging movenient of the detent member,vpull upon the strep-loop by the picker-stick causing one of the detentmembers to bind, sind the other I of seid members to release, the strap.

7. In a loom, a picker-Sticken endless, flexible eheckstrep 'thereforand .Within which it oscillates, binding devices actingin alternationupon opposite sides; ofthe strap loop`io hold one side and release theother, and vice versa, when the picker-stick engages the end of the'loep, each binding device comprising a fixed guide-stop and a detentmember movable toward and from it, to bind or release the iortion of thestraploop between them, an fixed, oppositely inclined; fulera for thetwo datent members, each fnlcrnm being so inclined that Vitsdetentuj-,member tends .normally to swing towaid its adjacent guide-stopto decrease the distance between their strap-engaging feces.

.in testimony wl'i'ereof, I have signed my naine to this s pecieation,in the presence of tivo subscribing Witnesses. v

ALONZO E. RHOADES.

'vitnesx-fes: w l

lle-infn. Hi FRENeifi, E. ll. Useooo.-

